Diagnostic preparations for scientific use; diagnostic preparations for use in research laboratories; diagnostic substances, other than those for medical use, namely, for scientific research in the field of neurodegenerative diseases using the salivary biomarker lactoferrin; diagnostic kits comprising specimen receptors in the nature of microplates coated with anti-lactoferrin antibodies and diagnostic reagents for analyzing selected bacteria for purposes of quantifying salivary lactoferrin f...